/Engine/Source/Runtime/Json/Public/Serialization/JsonSerializerMacros.h
virtual void ToJson ( [TSharedRef](API\Runtime\Core\Templates\TSharedRef)< TJsonWriter< TCHAR, [TCondensedJsonPrintPolicy](API\Runtime\Json\Policies\TCondensedJsonPrintPolicy)< TCHAR > > > & JsonWriter, bool bFlatObject ) const